upset current-off time是什么意思

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This paper introduced the working principle,characteristics,development,welding techniques and application of non-electric welding,and analyzed the micro-structure of the welding bead and tensile strength of the non-electric welded joints.

介绍了无电焊接技术的工作原理、特点、发展现状、焊接工艺以及应用状况,分析了无电焊接材料焊缝的组织形貌及焊接接头拉伸强度。

Non-electric welding is a novel efficient technique for emergency maintenance, which utilizes the heat released by self-propagating combustion to join metals without needing any power supply or gas sources.

无电焊接技术是利用自蔓延燃烧放热来实现金属连接的方法,无需任何电源和气源,是应急维修的有效技术手段。

The electroless gold plating was based on a commercial noncyanide bath and took electroless nickel plating.

为此,采用一种商用无氰配方无电镀金溶液,通过两步无电镀方法,控制实验样品的激活时间、水浴温度等条件和两步镀覆的时间,使用无电镀镍作为中间层,实现了在特定材料层上的无电镀金;其针孔密度低,表面平整度较好,具有高的选择性,为高性能器件的研制打下了基础。

The electroless gold plating was based on a commercial noncyanide bath and took electroless nickel plating.

在以前报道的MEMS结构无电镀金属化过程中,金属和硅结构会全部被金属化,难以形成复杂结构的局部选择性金属化。

Experimental study on microwave assisted photocatalytic degradation of phenol and its derivatives in aqueous solution was carried out with modified domestic microwave oven and electrodeless discharge lamp(EDL).

利用改装的家用微波炉和自制的无电极灯(EDL)试验了5种酚在水溶液中的微波辅助光催化降解效果。

The electroless deposition of copper on the monolayer film of diazoresin (DR), which was fabricated on the silicon or glass surface, was performed via absorbing SnCl 2 and Pd on the DR film.

组装于硅片或玻璃片基片上的重氮树脂(DR)单层膜,吸附Sncl2,Pd催化剂后,通过无电沉积的方法,在这些基片上制备了铜膜。

As a new method of polymerization,electroless polymerization was introduced to form polyaniline film on substrate of any shape.

提出了一种新的聚合方法———无电聚合。

The stainless steel matrix was dipped in a solution containing palladium and silver ions to prepare palladium-silver membrane by electroless plating.

无电解镀共沉积钯银合金膜是纯化氢同位素最有发展前途的方法之一 。